Implications of the foliar phytochemical diversity of the avocado crop cv. Hass in its susceptibility to pests and pathogens.

Phytochemical diversity (PD) can be considered as a defensive trait; it can operate through single plant secondary metabolites or usually as complex mixtures of them. We tested the more diversity-better defense hypothesis correlating the leaf plant secondary metabolites (PSMs) with the incidence of plant enemies on Hass avocado trees. We expected a negative correlation between the occurrence of plant enemies and PD metrics.

In Vitro Antifungal Activity of Plant Extracts on Pathogenic Fungi of Blueberry ( sp.).

Three pathogenic fungi of blueberry ( spp.) responsible for dieback disease, identified as , and , were isolated in the northwestern region of the state of Michoacán, Mexico. The mycelial growth in vitro of these fungi was inhibited by extracts from , and , medicinal plants collected in Sahuayo, Michoacán, Mexico.

Antioxidant Activity of the Essential Oil and its Major Terpenes of (Moc. and Sessé ex Benth.) Briq.

Background: The aim of this study was to investigate the antioxidant activity of (Moc. and Sessé ex Benth.) Briq.

Are body size and volatile blends honest signals in orchid bees?

Secondary sexual traits may convey reliable information about males' ability to resist pathogens and that females may prefer those traits because their genes for resistance would be passed on to their offspring. In many insect species, large males have high mating success and can canalize more resources to the immune function than smaller males. In other species, males use pheromones to identify and attract conspecific mates, and thus, they might function as an honest indicator of a male's condition.

Phenotypic Variations in the Foliar Chemical Profile of Persea americana Mill. cv. Hass.

The Hass avocado tree Persea americana cv. Hass was derived from a single hybrid tree of P. americana var.